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	<title>CodeItNow &#187; Irradiance Caching</title>
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		<title>Irradiance Caching: Part 2</title>
		<link>http://www.rorydriscoll.com/2009/01/24/irradiance-caching-part-2/</link>
		<comments>http://www.rorydriscoll.com/2009/01/24/irradiance-caching-part-2/#comments</comments>
		<pubDate>Sat, 24 Jan 2009 22:45:17 +0000</pubDate>
		<dc:creator>rory</dc:creator>
				<category><![CDATA[Global Illumination]]></category>
		<category><![CDATA[Graphics]]></category>
		<category><![CDATA[Irradiance Caching]]></category>

		<guid isPermaLink="false">http://www.rorydriscoll.com/?p=200</guid>
		<description><![CDATA[In my previous post, I wrote very briefly about an  important improvement to the irradiance caching algorithm &#8211; irradiance gradients &#8211; and I&#8217;m going to expand on rotational gradients this time. Gradients The gradient of a function represents both the direction and rate of change of that function as the inputs vary. For a one [...]]]></description>
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		<title>Irradiance Caching: Part 1</title>
		<link>http://www.rorydriscoll.com/2009/01/18/irradiance-caching-part-1/</link>
		<comments>http://www.rorydriscoll.com/2009/01/18/irradiance-caching-part-1/#comments</comments>
		<pubDate>Mon, 19 Jan 2009 01:35:35 +0000</pubDate>
		<dc:creator>rory</dc:creator>
				<category><![CDATA[C++]]></category>
		<category><![CDATA[Global Illumination]]></category>
		<category><![CDATA[Graphics]]></category>
		<category><![CDATA[Irradiance Caching]]></category>

		<guid isPermaLink="false">http://www.rorydriscoll.com/?p=166</guid>
		<description><![CDATA[Solving the rendering equation with even just one bounce of indirect lighting can take a long time. The majority of time spent rendering a frame is in estimating the lighting integral. For example, rendering a single bounce of indirect lighting at 720p resolution with 256 sample rays for a Monte Carlo estimator requires about 237 [...]]]></description>
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